Double-acting pump



June" 23, 1931. E, N. OVE

DOUBLE ACTING PUMP Filed May 26, 1930 INVENTOR -5 Ecward JY. Ov',

g BY

' ATT0RNEY Patented June 23, 1931 EDWARD' N. ovE, or DIRE, IoWAff s DOUBLE-nerriver"` rum? ,I

Application mea May 26,

casing in sections, of which certain ones are 1 reversible and interchangeable and therefore may be not only easily assembled or disassem bled, but may have such parts vquickly re-VV placed when broken, or for repairs.

I have accomplished these objects by the means which are hereinafter described and claimed, and which are illustrated in the accompanying drawings, inV which Fig. 1 is a vertical longitudinal medial section of my duplex pump, and Fig..2 is a horizontal section thereof taken on the broken line 2-2 of said Fig. 1. y v Various modications may be effected in this device without departing from this invention or the protection of the claim.

'The numeral l denotes the pump barrel "having at the top a stufiing-box Vbearing 14 25 seating a reciprocating stem 13'of a cupped flexible or elastic piston member or medial ,horizontal diaphragm 16, whose margin is clamped between the clamping rings 19 and 20 mounted in said chamber engaging ininterposed cylindrical gasket 21. The piston or plunger member 16 is centrally apertured to receive the stem 13 therethrough, the cupped andrevers'ed cupped and rigid disks 17 and 18 being mounted on a threaded part of said stem to clamp Vthe Vdiaphragm between them tightly and imperviously, and heldl by `threaded'nuts 25 also seated on said stem.

` The disks are cupped reversely to give clearance to the interposed partof the diaphragm i 140 in moving back and forthV in the barrel orv chamber 1, without injuryA to the diaphragm. ,A plug 15 is threaded into a hole in the bottom of said barrel and is removable to permit Y.

flushing thereof.

i5 The barrel 1 has removable end walls vor `members 9 seated against gaskets 8, and terminal chambers 4 and 5, ofthe same shape but reversed, are clampedagainst the walls 9, by lug and screw connections 22, 23 and 24 59 shown in Fig. 2, making impervious joints,

v Patent, is :V

1930, 1 serial naesaceo. Y v s rThe inlet and outlet ports Gand` 7-re`sp'e`ctively of said terminal chambers are diminished extensions of the-,chambers and positioned respectively inlongitudinal alinement with y pairs of like flap'valves above andbelowthe 55 diaphragm' 16,` as shown at'lO and 11 at the top, with the like. below. These valves are suspended to close the ports 12 in said walls 9, to swing open in one direction only, that is,

in the direction that iuid moves through the t0v barrel and said chambers toward the discharge port 7 By this arrangement, as the piston-diaphragm with the stem 13 are moved up and down, and the cupped partV of the diaphragm enters either chamber, 2 or 3, ,65 l

a suction is induced in the other chamber, the inlet valve 10 of which` o ens and the fluid or liquid in the inlet `cham er 4 and its port 6` fcaused to enter `the barrel and push open the appropriate outletvalve 11 to lill thetermi- 7G11 nal chamber 5 and discharge the latter by way of its outlet port 7 The action of the pump, by alternate reciprocation of the stem'13 and the vflexible diaphragm piston 16, in moving to and from, [I5 pumps at each movement, and any pulsations c induced in the delivered stream entering the terminal or outlet chamber 5 are suppressed there to cause the delivery of a steady or unpulsating stream through the port 7.

As the terminal chambers 4 and 5 are alike in shape, they may be interchanged whenre- Y versed,and,the end walls 9 of the barrel l likewise changed` orV alternated without changing their valve functions. The conjstruction of the device, is therefore simple,

and consequentlyA inexpensive, and easy to assemble and keep'mrepa1r, or forfsubstltutl'onszor cleansin claim as new, and desire'to secure by Letters A.A duplex pump, comprisingv in combination, a pump barrel having open opposite ends, and having a top'bearing aperture, 95, closure plates for-said open'ends,V a pairl of medial clamping rings mounted in saldbar-` rel, -I a flexible piston member partitionin saidbarrel and having itsmargin clampe betweensaidrings, a pump rod seated to re- 190 Having` descri ed my invention, what I ciprocate in said barrel bearing aperture and having a termination traversing said piston member centrally, clamping disks contacting opposite faces of the piston member and removabl secured upon said rod, said closure plates aving above and below said piston member valve ports,` valves for said ports opening in one direction only, and like but reversed outer chambers secured to said pump barrel and clamping between them said closure plates removably, said chambers having respectively like ports reversed in position, of Which one port is a receiving portv and the other port is a discharge port, the said closure plates, and' said chambers being interchangeable each for the other respectively.

In testimony whereof I aiiiX my signature.

EDWARD N. OVE. 

